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Composite amplifier

  • US 7,071,774 B2
  • Filed: 10/29/2002
  • Issued: 07/04/2006
  • Est. Priority Date: 11/29/2001
  • Status: Expired due to Term
First Claim
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1. A composite amplifier including a first and a second power amplifier connected to a Chireix type output network, said composite amplifier having a modulated input signal and substantially constant voltage amplitude at the output nodes of said power amplifiers, said composite amplifier being configured to generate, for at least one of said power amplifiers, a low power drive signal having non-constant amplitude that depends non-linearly on the amplitude of said input signal,wherein the composite amplifier is configured to form each low power drive signal as a combination of a linear drive signal component, which depends linearly on the amplitude of said input signal, and a non-linear drive signal component, which depends non-linearly on the amplitude of said input signal.

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